Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Pleasantville, New Jersey 08232
Saturday, August 3, 1991 23:47 EDT
NTSB Narrative Summary Released at Completion of Accident
THE PILOT EXPERIENCED A POWER LOSS SHORTLY AFTER TAKEOFF WHILE OPERATING OVER A RESIDENTIAL AREA AT NIGHT. THE AIRPLANE STRUCK A TELEPHONE POLE, AND CRASHED AND BURNED IN A STREET. RECORDS INDICATE THE ENGINE HAD A PROP STRIKE AT 1828 HRS, WAS OVERHAULED AT 2164 HRS, AND OVERHAULED AGAIN AT 3407 HRS. THE ACCIDENT OCCURRED AT 3486 HRS. NO RECORDS WERE AVAILABLE FOR THE FIRST OVERHAUL, HOWEVER WHEN EXAMINED AT THE 2ND OVERHAUL THE CRANKSHAFT WAS FOUND TO BE UNDERSIZED BY .003 INCH.. THE CRANKSHAFT HAD FAILED AT THE REAR OF THE NUMBER 3 CRANKPIN. METALLURGICAL EXAMINATION FOUND THE FRACTURE ORIGINATED SUBSURFACE IN AN AREA OF STRESS. NITRIDING RESIDUE WAS FOUND IN CRACKS WHICH HAD NOT BEEN DETECTED BY NONDESTRUCTIVE TESTING. THE FAA DOES NOT REQUIRE THE CERTIFICATION OF NONDESTRUCTIVE TESTING OPERATORS.
NTSB Probable Cause Narrative
A POWER LOSS DUE TO A FAILED CRANKSHAFT, WHILE OPERATING OVER UNSUITABLE TERRAIN. FACTORS RELATED TO THE ACCIDENT WERE, THE NIGHT CONDITIONS, THE FAILURE OF MAINTENANCE PERSONNEL TO DETECT THE CRACKS USING MAGNAFLUX INSPECTIONS, THE LACK OF ADEQUATE PROCEDURES/DIRECTIONS ON DETECTION OF CRACKS, AND THE LACK OF QUALIFICATIONS/CERTIFICATION FOR OPERATORS CONDUCTING NONDESTRUCTIVE TESTING.
Event Information
| Type of Event | Accident |
| Event Date | 8/3/1991 |
| Event Day of the Week | Saturday |
| Time of Event | 2347 |
| Event Time Zone | Eastern Daylight Time |
| Event City | PLEASANTVILLE |
| Event State | NEW JERSEY |
| Event Country | -- |
| Zipcode of the event site | 08232 |
| Event Date Year | 1991 |
| Event Date Month | 8 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | |
| Event Location Nearest Airport ID | |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | -- |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 2352 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | 330 |
| Weather Observation Facility ID | ACY |
| Elevation of weather observation facility | 76 |
| Distance of event from weather observation facility (units?) | 4 |
| Time Zone of the weather observation | EDT |
| Lighting Conditions | Night/Dark |
| Lowest Ceiling Height | 13000 |
| Lowest Non-Ceiling Height | 11000 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 25 |
| Dew Point at event time (in degress fahrenheit) | 23 |
| Wind Direction (degrees magnetic) | 210 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | 3 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 3 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1779 |
| NTSB Notification Source | -- |
| NTSB Notification Date | -- |
| NTSB Notification Time | 0 |
| Fiche Number and/or location -used to find docket information | 45657 |
| Date of most recent change to record | Dec 12 2000 10:39AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N9375S |
| NTSB Number | NYC91FA199 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | BEECH |
| Aircraft Model | C23 |
| Aircraft Series Identifier | C23 |
| Aircraft Serial Number | M1673 |
| Certified Max Gross Weight | 2450 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Apr 11 1991 12:00AM |
| Airframe hours since last inspection | 75 |
| Airframe Hours | 3486 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | GROTON NAVY FLYING CLUB |
| Aircraft Owner Street Address | BOX 152, NAVY SUBMARINE BASE |
| Aircraft Owner City | GROTON |
| Aircraft Owner State | CT |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 06340 |
| Operator is an individual? | -- |
| Operator Name | GROTON NAVY FLYING CLUB |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | BOX 152, NAVY SUBMARINE BASE |
| Operator City | GROTON |
| Operator State | CT |
| Operator Country | |
| Operator Zip code | 06340 |
| Operator Code | |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Personal |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | AIY |
| Departure City | ATLANTIC CITY |
| Departure State | NJ |
| Departure Country | |
| Departure Time | 2340 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | FRG |
| Destination City | FARMINGDALE |
| Destination State | NY |
| Destination Country | |
| Specific Phase of Flight | Climb |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:35AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |